The two main options are Lithium Iron Phosphate (LiFePO4) and Lithium Ion/Lithium Polymer (Li-ion). LiFePO4 batteries use iron phosphate as the cathode material. This makes them inherently safe lithium batteries, as iron phosphate is highly stable.
[pdf] Need a massive battery for your project? This lithium-ion pack is made of 3 balanced 2200mAh cells for a total of 6600mA capacity! The cells are connected in parallel and spot-welded to a protection circuit that provides over-voltage, under-voltage, and over-current protection.
[pdf] The LFP battery uses a lithium-ion-derived chemistry and shares many advantages and disadvantages with other lithium-ion battery chemistries. However, there are significant differences. Iron and phosphates are very . LFP contains neither nor , both of which are supply-constrained and expensive. As with lithium, human rights and environ.
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